Oil cooling device



NW. 5, 1935. L, D ON 2,019,813

OIL COOLING DEVICE Filed May 4, 1954 E rgi. E 2 22:5}; SIM m 72 29,4 1 map #1 0 Patented Nov. 5, 1935 UNITED STATES PATENT OFFICE on. COOLING DEVICE 7 Lewis D. Hilton, Oklahoma City, Okla. Application May 4, 1934, Serial No. 723,895 I 13 Claims. (01. 184-104) This invention relates to new and useful improvements in oil cooling devices for an internal combustion engine.

One object of the invention is'to provide improved means for displacing hot oil from the crankcase of an internal combustion engine into a cooling chamber. I

Another object of the invention is to provide improved means for bodily displacing the hot oil in a crankcase of an internal combustion engine and substituting a cool body of oil therefor.

An important object of the invention is to provide a cooling chamber having a body of oil therein, said chamber having connection with the usual crankcase of an engine, whereby the oil in said chamber may be entered into the crankcase and the oil in the crankase may, at the same time, be entered into said chamber.

Another object of the invention is to provide an air cooled chamber arranged'to be attached to, and having connection with, the crankcases of an internal combustion engine, said chamber having a body of oil therein, and means for bodily displacing the cooled oil from the chamber into the crankcase, said means also displacing the hot oil from the crankcase into said chamber, whereby the hot oil is cooled.

A further object of the invention is to provide an air-cooled chamber which may be attached to a crankcase of an internal combustion engine, and which has connection with said crankcase, whereby the oil in said crankcase may be displaced into said chamber for coolingsaid oil.

A construction designed to carry out the invention will be hereinafter described, together with other features of the invention;

The invention will be more readily understood from a reading of the following specification and by reference to the accompanying drawing, in which an example of the invention is shown, and

wherein:

Figure 1 is a side elevation of a crankcase of an engine having cooling means constructed in accordance with the invention attached thereto,

Figure 2 is a transversal vertical view of the same,

Figure 3 is a longitudinal vertical sectional view of the same, and

Figure 4 is a view similar to Figure 3 showing the piston in its forward position.

In the drawing the numeral ill designates an internal combustion engine having the usual crankcase ll secured to its lower end. The invention is not to be limited to any particular type of engine as the same may-be applied to any engine having a depending crankcase. A cylindrical cooling chamber I2 is attached to the side of the crankcase and has longitudinal radial-cooling fins l3- extending outwardly therefrom. The

chamber is preferably secured to the crankcase by integral webs M so that an air space i5 is provided between the wall of the crankcase and. the side of the chamber. However, it would be possible to secure the chamber in any other suitable way. The forward end of the chamber has connection'through a pipe I 6 with the'bottom of the crankcase H, and the rear of said chamber has connection through a pipe I! with said crankcase.

A suitable piston I8 is mounted to reciprocate l5 within the chamber, the piston rod [9 extending outwardly through the rear wall of the chamber (Figs. 1, 3, and 4). A suitable stuffing box 2!! through which said rod passes prevents leakage. The piston may be either manually or automatically operated. I

In operation, the usual quantity of oil is placed in the'crankcase I! and a similar quantity of oil is entered into the chamber 12 ahead of the plston l8 (Fig. 3 the piston being in its rear position. When the motor isstarted, the oil pump (not shown) will draw the oil from the crankcase through the oil outlet 2| inthe usual way. Since the connection between the chamber I 2 and the crankcase is below the point where the suction of the pump contacts the oil in the crankcase II, the oil within the chamber will remain dormant and will not be disturbed so long as any oil remains in the crankcase. Thus, it is obvious'that the oil in the crankcase provides sufficient lubrication for the motor and the oil within thechamber remains stationary, being cooled by the air passing around the chamber.

Whenthe oil in the crankcase becomes heated through use andits temperature nears the breaking down point, it'is desirable to change said oil. To accomplish this change quickly and easily, it is only necessary to move the piston I8 forwardly. within the chamber I 2. This forward movement of the piston will bodily displace the cool oil within the chamber through the connection l6 into the crankcase l I. The cool oil entering the crankcase will displace the heated oil therein through the connection I! into the cooling chamber l2 behind thepiston l8, which has been moved forwardly (Fig. 4). The movement of the piston is rapid and it is the quick displacement of the oil from the chamber into the crankcase that causes the displacement of the heated oil from the crankcase into the chamber. Further, the rapid displacement prevents mingling of the cool oil with the hot oil, and permits the removal of said hot oil from the crankcase in a body and a substitution of the cool oil therefor.

It is obvious that a complete change of oil is had. The hot oil which has just been displaced into the chamber I2 is quickly cooled by the air passing around the chamber. When the cool oil, which has been entered into the crankcase, is heated by the operation of the engine and is near the breaking down point, movement of the piston 18 to its rear position will again accomplish a complete change of oil. The advantages of the interchanging of oil are obvious. The oil in the crankcase is never permitted to be heated to a sufliciently high temperature to break down said oil, thereby prolonging the life of the same. By providing cool oil to the motor at alltimes, the lubricating qualities of the oil are always at a maximum, whereby perfect lubrication in the engine is had. I have omitted the operating means for the piston, because said piston may be either manually operated from the dash board of the car or it may be automatically operated by any suitable means.

' It is again brought out that the movement of the piston must be fairly rapid, whereby the cool oil in the chamber and the hot oil in the crankcase are bodily displaced from one to the other, so as to prevent mingling or mixing of the hot and cool oil. In this Way two separate bodies of oil are provided, one in the crankcase being used to lubricate the engine, and the other lying dormant in the chamber [2 which is air cooled, the cooling being accentuated by the longitudinal cooling fins I3.

Also, I have shown the chamber [2 as made integral with the crankcase. It is pointed out that it is possible to make the chamber entirely separate and attach it to the usual crankcase of any engine. 7

What I claim and desire to secure by Letters Patent, is: V

1. An oil cooling device for an internal combustion engine having a crankcase which has a body of oil therein comprising, a cooling chamber connected with said crankcase and having a body of oil stored therein, and means within said chamber for displacing the stored oil from the chamber into the crankcase, said means at the same time displacing the body of oil from the crankcase into the chamber.

2. An oil cooling device for an internal combustion engine having a crankcase which has a body of oil therein comprising, a cooling chamber connected with said crankcase and having a body of oil stored therein, and a piston reciprocable within the chamber for displacing the body of cool oil from the chamber into the crankcase and the body of hot oil from the crankcase into the chamber.

3. An oil cooling device for an internal combustion engine having a crankcase which has a body of oil therein comprising, a cooling chamber connected with said crankcase and having a body of oil stored therein, a piston reciprocable within the chamber for displacing the body of cool oil from the chamber into the crankcase and. the body of hot oil from the crankcase into the chamber, and a means for reciprocating the piston.

4. An oil cooling device for an internal combustion engine having a crankcase which has a body of oil therein comprising, a cooling chamber connected with said crankcase and having a normally cool body of oil stored therein, and means within said chamber for displacing the cool body of stored oil from said chamber into the crankcase and at the same time displacing the body of hot oil from the crankcase into the chamber, both displacements being afiected simultaneously through a single operation of said means.

5. An oil cooling device for an internal combustion engine having a crankcase which has a body of oil therein comprising, a cooling chamber 1 connected with said crankcase and having a body of normally cool oil stored therein, and a piston reciprocatable within the chamber for displacing the body of cool oil therefrom into the crankcase and at the same time displacing the body of hot 15 oil from the crankcase into the chamber, both displacements afiected simultaneously through a single operation of the piston.

6. An oil cooling device for an internal combustion engine having a crankcase which has a 20 body of oil therein comprising, a cooling chamber connected with said crankcase and having a body of oil stored therein, and means for displacing the entire body of stored oil from the crankcase into the chamber at a single continuous operation, 25 whereby the entire body of oil is removed from the crankcase at substantially the same time.

'7. The combination with an internal combustion engine having a crankcase which has a body of oil therein, of an oil cooling device comprising, 30-- a cooling chamber connected with said crankcase and having a body of oil'therein, and means for displacing the entire body of stored oil from the crankcase into the chamber at a single continuous operation, whereby the entire body of oil is re- 35 moved from the crankcase at substantially the same time. it

8. The combination with the crankcase of an internal combustion engine having a body of oil therein, of'an oil cooling device comprising, a 40 cooling chamber connected with said crankcase, and means for displacing the entire body of stored oil from the crankcase into the chamber at a single continuous operation, whereby the entire body of oil is removed from the crankcase at substantially the same time.

9. A combination with the crankcase 01' an internal combustion engine having a body of oil therein, or an oil cooling device comprising, an aircooled chamber connected with said crankcase and having a body of oil stored therein, and means for displacing the entire body of stored oil from the crankcase into the chamber at a single continuous operation, whereby the entire body of oil is removed from the crankcase at substantially the same time, said means at the same time displacing the body of stored oil from the chamber into the crankcase.

10. An oil cooling attachment for the crankcase of 'an internal combustion engine comprising, a cooling chamber arranged to be attached to and connected with said crankcase which has a body of oil stored therein, and means for displacing the entire body of stored oil from the crankcase into the chamber 'at a single continuous operation, 5 whereby the entire body of oil is removed from the crankcase at substantially the same time.

ll. An oil cooling attachment for the crankcase of an internal combustion engine having a body of oil therein comprising, a cooling chamber arranged to be attached to and connected with said crankcase and having a body of oil stored there in, and means for displacing the entire body of stored oil from the crankcase into the chamber at a single continuous operation, whereby the entire body of oil is removed from the crankcase at substantially the same time, said means at the same time displacing the body of stored hot oil from the chamber into the crankcase.

12. An oil cooling device for an internal combustion engine having a crankcase containing a body of oil comprising, a cooling chamber connected with said crankcase and having a body of normally cool oil stored therein, and means for 10 interchanging the entire bodies of oil in said 7 storage chamber having the same capacity as the crankcase, said crankcase and chamber each containing a body of oil, and means for immediately interchanging the entire bodies of oil.

LEWIS D. HILTON. 

